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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
01/02/2016 |
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Data da última atualização: |
01/02/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GOMES, E. G.; ABREU, U. G. P. de; MELLO, J. C. C. B. S. de; CARVALHO, T. B. de; ZEN, S. de. |
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Afiliação: |
ELIANE GONCALVES GOMES, SGE; URBANO GOMES PINTO DE ABREU, CPAP; JOÃO CARLOS CORREIA BAPTISTA SOARES DE MELLO, UNIVERSIDADE FEDERAL FLUMINENSE; THIAGO BERNARDINO DE CARVALHO, ESCOLA SUPERIOR DE AGRICULTURA "LUIZ DE QUEIROZ"; SÉRGIO DE ZEN, ESCOLA SUPERIOR DE AGRICULTURA "LUIZ DE QUEIROZ". |
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Título: |
Economic and socio-environmental performance assessment of beef cattle production systems: a data envelopment analysis (DEA) approach with weight restrictions. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, Brasília, DF, v. 44, n. 6, 2015. p. 219-225. |
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DOI: |
http://dx.doi.org/10.1590/S1806-92902015000600004 |
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Idioma: |
Português |
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Conteúdo: |
This study evaluated the performance of 21 beef cattle modal production systems that conduct only the raising phase. These production systems were developed in 21 municipalities in seven Brazilian states. We used two diferent DEA BCC models, corresponding to different points of view. Firstly we used an economic model that measured the ability of a production system to generate revenue with the preservation of native forest, using labor, capital, and current spending as inputs. |
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Palavras-Chave: |
Beef cattle production system; Efficiency mdoels. |
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Thesagro: |
Produção animal. |
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Thesaurus Nal: |
animal production. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/138200/1/RBZ2015-Gomes-et-al.pdf
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Marc: |
LEADER 01321naa a2200229 a 4500
001 2035742
005 2016-02-01
008 2015 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/S1806-92902015000600004$2DOI
100 1 $aGOMES, E. G.
245 $aEconomic and socio-environmental performance assessment of beef cattle production systems$ba data envelopment analysis (DEA) approach with weight restrictions.$h[electronic resource]
260 $c2015
520 $aThis study evaluated the performance of 21 beef cattle modal production systems that conduct only the raising phase. These production systems were developed in 21 municipalities in seven Brazilian states. We used two diferent DEA BCC models, corresponding to different points of view. Firstly we used an economic model that measured the ability of a production system to generate revenue with the preservation of native forest, using labor, capital, and current spending as inputs.
650 $aanimal production
650 $aProdução animal
653 $aBeef cattle production system
653 $aEfficiency mdoels
700 1 $aABREU, U. G. P. de
700 1 $aMELLO, J. C. C. B. S. de
700 1 $aCARVALHO, T. B. de
700 1 $aZEN, S. de
773 $tRevista Brasileira de Zootecnia, Brasília, DF$gv. 44, n. 6, 2015. p. 219-225.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Algodão. Para informações adicionais entre em contato com cnpa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Algodão. |
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Data corrente: |
28/03/2023 |
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Data da última atualização: |
28/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SEVERINO, L. S. |
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Afiliação: |
LIV SOARES SEVERINO, CNPA. |
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Título: |
Single-seed selection of fast-germinating genotypes of castor (Ricinus communis). |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Industrial Crop and Products, v. 194, 116307, p. 1-9, 2023. |
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ISSN: |
0926-6690 |
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DOI: |
https://doi.org/10.1016/j.indcrop.2023.116307 |
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Idioma: |
Inglês |
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Conteúdo: |
Castor (Ricinus communis) is a non-edible seed cultivated for the highly-valued oil extracted from its seed. Uneven germination and seedling emergence is a frequent problem for the establishment of castor fields. This study tested the hypothesis that castor can be selected for fast germination using the method of single-seed selection. Two-hundred castor seeds cv. BRS Energia were incubated at 22 ◦C in germination paper, and the 10 seeds that germinated faster were selected, planted, and cultivated to produce seeds. The harvested seeds were subjected to an additional cycle of single-seed selection for fast germination, and the gemination ability was sequentially tested along 8 months after harvest. It was observed that freshly harvested seeds have reduced germination ability at suboptimal temperature (22 ◦C), but they germinated better when exposed to near-optimal temperature (30 ◦C) or the germination ability gradually increased over time. The selection for fast-germinating seeds unintentionally selected seeds that germinate quickly in response to sodium hypochlorite (NaClO) which was used for disinfection, and that sensibility was effectively transferred to the descendants. Other highly saline substances (NaCl and KCl) elicited germination on the previously-selected NaClO-sensitive genotypes. The study was not conclusive if two cycles of single-seed selection obtained substantial improvement of the germination ability of freshly harvested seeds under suboptimal temperature. MenosCastor (Ricinus communis) is a non-edible seed cultivated for the highly-valued oil extracted from its seed. Uneven germination and seedling emergence is a frequent problem for the establishment of castor fields. This study tested the hypothesis that castor can be selected for fast germination using the method of single-seed selection. Two-hundred castor seeds cv. BRS Energia were incubated at 22 ◦C in germination paper, and the 10 seeds that germinated faster were selected, planted, and cultivated to produce seeds. The harvested seeds were subjected to an additional cycle of single-seed selection for fast germination, and the gemination ability was sequentially tested along 8 months after harvest. It was observed that freshly harvested seeds have reduced germination ability at suboptimal temperature (22 ◦C), but they germinated better when exposed to near-optimal temperature (30 ◦C) or the germination ability gradually increased over time. The selection for fast-germinating seeds unintentionally selected seeds that germinate quickly in response to sodium hypochlorite (NaClO) which was used for disinfection, and that sensibility was effectively transferred to the descendants. Other highly saline substances (NaCl and KCl) elicited germination on the previously-selected NaClO-sensitive genotypes. The study was not conclusive if two cycles of single-seed selection obtained substantial improvement of the germination ability of freshly harvested seeds under subo... Mostrar Tudo |
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Palavras-Chave: |
BRS Energia. |
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Thesagro: |
Germinação; Mamona; Ricinus Communis. |
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Thesaurus NAL: |
Castor beans; Seed germination. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02175naa a2200217 a 4500
001 2152825
005 2023-03-28
008 2023 bl uuuu u00u1 u #d
022 $a0926-6690
024 7 $ahttps://doi.org/10.1016/j.indcrop.2023.116307$2DOI
100 1 $aSEVERINO, L. S.
245 $aSingle-seed selection of fast-germinating genotypes of castor (Ricinus communis).$h[electronic resource]
260 $c2023
520 $aCastor (Ricinus communis) is a non-edible seed cultivated for the highly-valued oil extracted from its seed. Uneven germination and seedling emergence is a frequent problem for the establishment of castor fields. This study tested the hypothesis that castor can be selected for fast germination using the method of single-seed selection. Two-hundred castor seeds cv. BRS Energia were incubated at 22 ◦C in germination paper, and the 10 seeds that germinated faster were selected, planted, and cultivated to produce seeds. The harvested seeds were subjected to an additional cycle of single-seed selection for fast germination, and the gemination ability was sequentially tested along 8 months after harvest. It was observed that freshly harvested seeds have reduced germination ability at suboptimal temperature (22 ◦C), but they germinated better when exposed to near-optimal temperature (30 ◦C) or the germination ability gradually increased over time. The selection for fast-germinating seeds unintentionally selected seeds that germinate quickly in response to sodium hypochlorite (NaClO) which was used for disinfection, and that sensibility was effectively transferred to the descendants. Other highly saline substances (NaCl and KCl) elicited germination on the previously-selected NaClO-sensitive genotypes. The study was not conclusive if two cycles of single-seed selection obtained substantial improvement of the germination ability of freshly harvested seeds under suboptimal temperature.
650 $aCastor beans
650 $aSeed germination
650 $aGerminação
650 $aMamona
650 $aRicinus Communis
653 $aBRS Energia
773 $tIndustrial Crop and Products$gv. 194, 116307, p. 1-9, 2023.
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Embrapa Algodão (CNPA) |
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